Papers by Luis Quesada-Allue
Journal of insect physiology, Jan 12, 2018
After the emergence of the Ceratitis capitata imago, the pale and folded wings are expanded and s... more After the emergence of the Ceratitis capitata imago, the pale and folded wings are expanded and sclerotized to acquire the definitive form and to stabilize the cuticle. The wings of this fly show a specific pattern of brownish and black spots. Black spots are pigmented by melanin, whereas there was scarce information about the development of the brownish spots. N-beta-alanydopamine (NBAD) is the main tanning precursor in C. capitata body cuticle, and we hypothesized that it may be responsible for the colouration of the brownish spots. We determined the topology and timing of NBAD synthesis and deposition to attain the species-specific colouration pattern. We demonstrated that during the first hours the colour of the brownish spots was principally determined by the tanning of the hairs. Haemolymph circulation through the veins is required to tan the wings. We confirmed that soon after wing spreading, most of the wing epidermal cells disappeared. Thus, the tanning of the brown spots w...
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Febs Lett, 1976
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Quimica Viva, 2014
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Biochemistry Usa, Dec 1, 1984
Proteins, soluble in 7 M urea, were extracted from third-instar larval and pupal cuticles of Dros... more Proteins, soluble in 7 M urea, were extracted from third-instar larval and pupal cuticles of Drosophila melanogaster. Both extracts contain a limited number of polypeptides resolved by one- or two-dimensional electrophoresis. The five major larval proteins have low molecular weights (less than 20000) and are not glycosylated. The major pupal cuticle proteins fall into two size classes: two with apparent molecular weights of 56K and 82K and four with molecular weights between 15K and 25K. The proteins with high apparent molecular weights are glycosylated. In nondenaturing gels, no components of the larval and pupal cuticle extracts comigrate. One-dimensional "fingerprints" indicate that cuticle proteins from these two stages have unique primary structures. Immunological results indicate that the major low molecular weight larval and pupal cuticle proteins are comprised of two families of proteins that share antigenic determinants. The high molecular weight pupal cuticle proteins are immunologically unrelated to the low molecular weight components. We conclude that the pupal and larval proteins are encoded in part by multigene families that have arisen by gene duplication and evolutionary divergence.
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癌, Jun 1, 1976
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Biochemical and Biophysical Research Communications
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Japanese journal of cancer research: Gann
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Molecular and Cellular Biochemistry
ABSTRACT
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European Journal of Biochemistry
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Molecular and Cellular Biochemistry
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FEBS Letters
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Proceedings of the National Academy of Sciences
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Plant Science
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Journal of Biological Chemistry
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Biochemical Journal
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Molecular and Cellular Biochemistry
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Insect biochemistry and molecular biology
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Biochemistry
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Papers by Luis Quesada-Allue